package com.atguigu.gulimall.seckill.scheduled;

import com.atguigu.gulimall.seckill.service.SeckillService;
import lombok.extern.slf4j.Slf4j;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

/**
 * 秒杀商品定时上架：
 * 每天上三点：上架最近三天需要秒杀的商品
 * （当天/明天/后天）00:00:00  -23:59:59
 */
@Slf4j
@Service
public class SeckillSkuScheduled {
    @Autowired
    private SeckillService seckillService;

    @Autowired
    RedissonClient redisClient;

    private final String upload_lock="seckill:upload:lock";
    @Scheduled(cron = "0 * * * * ?")
    public void uploadSeckillSkulatest3Days() {
        log.info("上架秒杀商品");
        //1.重复上架无需处理
        //分布式锁  锁执行完成，状态已经更新完成，释放锁以后，其他人获取到就会拿到最新的状态
        RLock lock = redisClient.getLock(upload_lock);
        lock.lock(10, TimeUnit.SECONDS);
        try {
            seckillService.uploadSeckillSkulatest3Days();

        }finally {
            //解锁
            lock.unlock();
        }



    }
}
